Arsenal have beaten Man United with 2-0 in their last league game, thus getting back to winning ways. Mikel Arteta indeed has brought positive changes for Arsenal, including the tactics and the mental attitutes.
As for Leeds United, now they sit 1st in the league table. Their target is to earn promotion to EPL. So they may lack motivation in this FA Cup match.
Mikel Arteta wants to prove himself in his first season in charge, and Arsenal’s morale can be greatly boosted if they claim this title.
Now the AH line is in favor of Arsenal.
So Arsenal are expected to win this home match.